Cellphones have certainly changed a lot in the last 20 years. Once giant unwieldy beasts, they have evolved into sleek, portable devices with dozens of features. This Russian Matryoshka doll cleverly illustrates that with the traditional doll-within-a-doll design.

Okay, so it's not exactly to scale. But anyone old enough to remember those monsters from the 80's and early 90's knows that it's not a completely ridiculous exaggeration. Unfortunately, the doll is only a concept from designer Kyle Bean. [Kyle Bean via PopSci via Gadget Review]